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Wiring configuration for nestlearn thermostat to replace TRANE tcont803as32daa heat pump thermostat?

Bennu0
Community Member

Need help configuring for nest learning thermostat to replace TRANE tcont803as32daa heat pump thermostat. 

brown at y2

f empty

x2 empty

w1 white

s1 grey

s2 pink

rc jumped to R

R red

O orange

Y Yellow

G green

B Blue

 

The nest says it does not get any power. Tried reseting and moving RH to RC

 

current config

y1 yellow

y2 brown

g green

ob orange

rc red

w1 white

w2 empty

c blue

* empty

rh empty

 

cap offed pink and gray.

thank you in advance.

1 REPLY 1

Patrick_Caezza
Diamond Product Expert
Diamond Product Expert

@Bennu0 

 

Do you have a picture of the original thermostat's wiring that you can post?

Did you disconnect/turn off the power to the system before you switched the thermostats?

Try connecting the Green and Red wires together (power the system off first) and see if the blower turns on. If the blower doesn't turn on, then you might have blown the fuse on the control PCB in the furnace.

The only change in the wiring that I would make is to move the white wire from W1 to W2/AUX. Having it in W1 shouldn't cause the no power problem you are having.

 


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